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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <windows.h>
#include <stdio.h>
#include <string.h>
#include "gtest/gtest.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/Unused.h"
#include "mozilla/WindowsVersion.h"
#include "nsDependentString.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsWindowsHelpers.h"
using namespace mozilla;
constexpr const WCHAR pattern[] = L"\\api-*.dll";
static LPWSTR GetModuleFileDir(HMODULE module, LPWSTR path, DWORD size) {
DWORD chars = GetModuleFileNameW(module, path, size);
if (chars <= 0 || chars >= MAX_PATH) {
return nullptr;
}
// Split the base name from the directory.
LPWSTR basename = wcsrchr(path, L'\\');
if (!basename) {
return nullptr; // at least one path separator must be present
}
*basename++ = L'\0';
return basename;
}
// Make sure that Universal CRT forwarder DLLs are not in app directory if it
// is in Api Sets.
TEST(TestUCRTDepends, AppDir)
{
WCHAR appdir[MAX_PATH];
ASSERT_TRUE(GetModuleFileDir(nullptr, appdir, MAX_PATH));
WCHAR path[MAX_PATH + ArrayLength(pattern)];
swprintf(path, L"%s%s", appdir, pattern);
WIN32_FIND_DATAW wfd;
HANDLE hFind = FindFirstFileW(path, &wfd);
#if defined(_M_ARM64) // We do not ship Universal CRT DLLs on aarch64.
if (hFind == INVALID_HANDLE_VALUE) {
EXPECT_EQ(GetLastError(), static_cast<DWORD>(ERROR_FILE_NOT_FOUND));
return;
}
#else
ASSERT_NE(hFind, INVALID_HANDLE_VALUE);
#endif
do {
nsModuleHandle module(LoadLibraryW(wfd.cFileName));
EXPECT_TRUE(module);
if (!module) {
continue;
}
// Get a full path of the loaded module.
LPWSTR basename = GetModuleFileDir(module, path, MAX_PATH);
ASSERT_TRUE(basename);
// If the module is in Api Sets, GetModuleFileName returns the redirected
// DLL path, so filenames will not match.
bool inApiSets = wcsicmp(wfd.cFileName, basename);
if (IsWin10OrLater()) {
// All files must be in Api Sets on Windows 10.
EXPECT_TRUE(inApiSets);
continue;
}
if (IsWin8OrLater()) {
if (inApiSets) {
continue; // This file is in Api Sets, OK.
}
// Universal CRT files are not in Api Sets on Windows 8.
EXPECT_TRUE(StringBeginsWith(nsDependentString(wfd.cFileName),
u"api-ms-win-crt-"_ns,
nsCaseInsensitiveStringComparator));
} else { // Windows 7
// All files must not be in Api Sets on Windows 7.
EXPECT_FALSE(inApiSets);
}
// Files must be loaded from appdir
EXPECT_TRUE(!wcsicmp(path, appdir));
} while (FindNextFileW(hFind, &wfd));
EXPECT_EQ(GetLastError(), static_cast<DWORD>(ERROR_NO_MORE_FILES));
BOOL ret = FindClose(hFind);
EXPECT_TRUE(ret);
}
// Make sure that we do not depend on Universal CRT forwarder DLLs in the
// system directory.
TEST(TestUCRTDepends, SystemDir)
{
WCHAR appdir[MAX_PATH];
ASSERT_TRUE(GetModuleFileDir(nullptr, appdir, MAX_PATH));
WCHAR path[MAX_PATH + ArrayLength(pattern)];
UINT chars = GetSystemDirectoryW(path, MAX_PATH);
ASSERT_TRUE(chars > 0 && chars < MAX_PATH);
wcscat(path, pattern);
WIN32_FIND_DATAW wfd;
HANDLE hFind = FindFirstFileW(path, &wfd);
if (hFind == INVALID_HANDLE_VALUE) {
EXPECT_EQ(GetLastError(), static_cast<DWORD>(ERROR_FILE_NOT_FOUND));
EXPECT_TRUE(IsWin8OrLater());
return; // Not found in the system directory, OK.
}
// Api Sets forwarders must not be present on Windows 10.
EXPECT_FALSE(IsWin10OrLater());
do {
HMODULE module = GetModuleHandleW(wfd.cFileName);
if (!module) {
continue; // We are not using this file, OK.
}
// Get a full path of the loaded module.
LPWSTR basename = GetModuleFileDir(module, path, MAX_PATH);
ASSERT_TRUE(basename);
// If the module is in Api Sets, GetModuleFileName returns the redirected
// DLL path, so filenames will not match.
if (wcsicmp(wfd.cFileName, basename)) {
// If this file is in Api Sets, it must not be present in appdir.
swprintf(path, L"%s\\%s", appdir, wfd.cFileName);
EXPECT_EQ(GetFileAttributesW(path), INVALID_FILE_ATTRIBUTES);
} else {
// If this file is not in Api Sets, it must be loaded from appdir.
EXPECT_TRUE(!wcsicmp(path, appdir));
}
} while (FindNextFileW(hFind, &wfd));
EXPECT_EQ(GetLastError(), static_cast<DWORD>(ERROR_NO_MORE_FILES));
BOOL ret = FindClose(hFind);
EXPECT_TRUE(ret);
}
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